According to tradition, a samurai warrior named Okuba Samanosuke discovered Misasas's hot springs while on the road for a pilgrimage at the mount Mitoku, over 800 years ago. He encountered a white wolf which he tried to hunt with bow and arrows but he finally gave up and let it free.

That night he dreamed that the great Bodhisattva Myoken told him the location of hot spring's source to thank him for sparing the wolf its life. Since then the hot spring has healed many sick villagers. Located at the foot of an old camphor tree in the resort, the hot spring is still active.